A young American woman visiting her author father in London discovers that her childhood habit of sleepwalking has recurred. She has a vivid dream of witnessing a murder in a strange house - or is it a dream?
Unfortunately the movie Sleepwalker is not yet available on HBO Max.
| Writing | Brian Clemens | Writer |
| Directing | Alan Gibson | Director |
| Production | Ian Fordyce | Producer |
| Sound | Paul B. Clay | Music Supervisor |
| Costume & Make-Up | Shirley Muslin | Makeup Supervisor |
| Art | Michael Eve | Production Design |
| Editing | Al Pigden | Editor |
| Production | Cecil Clarke | Executive Producer |
| Costume & Make-Up | Sue Le Cash | Wardrobe Supervisor |
| Sound | Laurie Johnson | Music |
| Sound | Len Penfold | Sound Director |
| Lighting | Pete Dyson | Lighting Director |
| Editing | Carole Legg | Editor |
| Editing | Colin Slade | Editor |
